"I agree with President Trump's method of applying sanctions and pressure to North Korea to bring them out to negotiate", Moon said during the interview, which took place on April 27. "Moon might not be able to reopen Kaesong right away but he will follow steps towards it in the course of improving South-North Korean relations".
A statement was published in Kim's mouthpiece Korean Central News Agency, which said: "The DPRK will never beg for the maintenance of friendship with China, risking its nuclear program which is as precious as its own life, no matter how valuable the friendship is".
North Korean leader Kim Jong-un inspected troops on two islands near the border with South Korea in the Yellow Sea, to check the readiness of his military amid escalated tensions with the USA and Seoul.
The ministry said the spy agencies in June 2014 "ideologically corrupted and bribed" a North Korean citizen who was working in Russian Federation to carry out the alleged assassination on Kim after returning home.
The report claimed a North Korean citizen was involved in the plot, using "biochemical substances including radioactive substance and nano poisonous substance" to target Kim.
The supreme leader would have been targeted at a military parade and public procession, with the results not be visible for six to 12 months afterwards, KCNA reported.
The statement, carried by North Korean news agency KCNA, said the CIA and South Korean intelligence services had "hatched a vicious plot to hurt the supreme leadership of the DPRK".
Reclusive North Korea warned this week that USA hostility had brought the region to the brink of nuclear war.
North Korea's Ministry of State Security said it will "ferret out and mercilessly destroy" the "terrorists" in the CIA and South Korean intelligence agency for targeting its supreme leadership.
Chinese state-run media have also called for harsher sanctions against the North in the event of a fresh atomic test, urging Pyongyang to "avoid making mistakes", and spoken of the need for it to abandon its nuclear programmes.
More recently, US President Donald Trump has vowed to "properly deal" with North Korea as it continues to test ballistic missiles off the peninsular. He also warned other countries their firms could face so-called secondary sanctions for doing illicit business with Pyongyang.